LANDSCAPING PRODUCTS > Retaining Wall Block > J-Block > Installation

[ PLAN YOUR PROJECT ]

Before beginning construction, prepare a layout plan of the wall. Be sure to consider the draining patterns, soil conditions and the local building codes. If you have any questions ask your local dealer or a qualified engineer.

[ PREPARE THE FOUNDATION ]

A solid foundation is essential to insure a well constructed, long lasting wall. Dig a trench approximately 14 inches wide and 6 inches deep. This will allow for 1 inch of compacted granular fill (sand and gravel) and for the first course to be buried. Before setting the first block, level the fill with a carpenters level.

[ INSTALL THE FIRST COURSE ]
Place the first course of J-Block on the compacted fill with the built in set-back lip facing down. Level the J-Block from side to side and from front to back with a carpenters level. Use a string line to insure a straight line. It is very important that the first course is installed level.

[ INSTALL THE BACKFILL ]

Backfill with clean granular fill after placing the J-Block in the desired position. Compact each layer as you go. Use of organic topsoil or clay type soil is not recommended for backfill. Fill in directly behind the wall for approximately 12 inches. It is very important to backfill each course as it is installed. Compacting each layer of backfill is an absolute must.

[ INSTALL ADDITIONAL COURSES ]

Position each additional course of J-Block on the preceding course and straddle the top block half way on top of the two lower block. This staggers the vertical joints of the wall. No mortar or interlocking pins are required. Just simply stack the J-Block and the built in set-back lip will automatically establish the required stagger. It is very important to remember to backfill each course as it is installed. Repeat the last two steps to build a wall as high as 40 inches (8 courses above grade).

[ BREAKING A J-BLOCK UNIT ]

Draw a line where the J-Block unit is to be broken. Take a brick chisel and hammer and go back and forth over the line until the unit breaks. A masonry saw can also be used. Chips and flying particles can be encountered when cutting or breaking concrete. Be sure to take proper precautions. Safety glasses are recommended.


 

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